• Registered: 2010-05-11
  • Posts: 84

Topic: Roland MRS2 CV/Gate Problem

I'm trying to trigger the CV/Gate of a Roland Promars directly from a Sequential Pro One...to no avail. The CV is working perfectly when a key is pressed on the Promars or the "Hold" function is on. So that's to say that there's something up with the gate input. Anyone got any ideas? I've tried a variety of cables, ring and tip etc.

stefanblomeier.com
  • From: Berlin
  • Registered: 2008-07-08
  • Posts: 292

Re: Roland MRS2 CV/Gate Problem

Weird, both should be V-trigger - http://en.wikipedia.org/wiki/CV/Gate#Gate

Did you do this?

3-5 GATE/CLK IN

Once this digital input is enabled by selecting the REPEAT/EXT MODE, it provides for envelope gating, or sequencer or appegiate clocking by an external (+5Vnominal) pulse.

- http://www.flatline.net/Projects/Audio/ … Section3-5

Another thing to do is to use any voltmeter to see if the gate out is sending out voltage.

Just out of curiosity, does it work when you connect the cv/gate out of the pro-one to the promars?

http://sneak-thief.com - raw electrofunk

sneakthief's Website

  • Registered: 2010-05-11
  • Posts: 84

Re: Roland MRS2 CV/Gate Problem

yeah, both v-trig...really strange, isn't it?! it works with other synths and yeah, it works promars>pro one. will check with voltmeter

stefanblomeier.com

4 Reply by plikestechno (edited by plikestechno 2011-10-05 01:18:13)

  • From: Edmonton AB Canada
  • Registered: 2008-07-15
  • Posts: 712

Re: Roland MRS2 CV/Gate Problem

Despite this amazing list of Roland manuals, the one I go to for any vintage Roland product, I can't seem to find a Promars one.

ftp://ftp.roland.co.uk/productsupport/

plikestechno's Website

5 Reply by plikestechno (edited by plikestechno 2011-10-05 01:24:05)

  • From: Edmonton AB Canada
  • Registered: 2008-07-15
  • Posts: 712

Re: Roland MRS2 CV/Gate Problem

I could be wrong but I think the old Roland stuff needs a hot signal to gate them. Like +12V or +14V or something.

EDIT:Actually, my SH-7 manual says just +3V to trigger it, but sends out +14V from its external gate! But then I checked the SH-09 and SH-2 manuals and they need +7.5V minimum to trigger it so maybe the Promars is the same. Their gate jacks all output +14V.

I remember the SH-09 being a bastard to trigger externally as well and that was part of the reason I sold it along with the fact I had a SH-7 anyways.

plikestechno's Website

  • Registered: 2010-05-11
  • Posts: 84

Re: Roland MRS2 CV/Gate Problem

cheers man, that sounds right

stefanblomeier.com
  • rude66
  • robot des duivels
  • Offline
  • Registered: 2008-07-07
  • Posts: 1,844

Re: Roland MRS2 CV/Gate Problem

yup, usually 10V will do it to trigger early sh series rolands..

  • From: Edmonton AB Canada
  • Registered: 2008-07-15
  • Posts: 712

Re: Roland MRS2 CV/Gate Problem

And since a Pro-One only sends out a +5V gate voltage, well there you have it...

plikestechno's Website

  • Registered: 2010-05-11
  • Posts: 84

Re: Roland MRS2 CV/Gate Problem

thanks guys

stefanblomeier.com